提出了基于轨迹、速度和加速度多目标设计要求的六连杆机构轨迹综合优化设计方法.利用傅里叶级数理论,建立了六连杆机构运动轨迹的精确数学表达式,并推导出了滑块速度和加速度计算公式.根据机构工程化设计约束条件,以与给定轨迹上对应运动点的轨迹、速度、加速度差值最小和机构高度最小为优化目标,建立了压力机六连杆机构优化设计数学模型,采用惩罚函数和复合形相结合的优化算法进行求解,获得了与给定轨迹逼近程度较高以及机构参数合理的六连杆机构.通过实例,验证了设计方法的正确性和有效性.%Six-link transmission mechanism optimization design was proposed with the multi-objective demand of path, velocity and acceleration. A brief uniform mathematical description of the slide motion path was established using Fourier series theory. Then the formulas of the slide velocity and acceleration were obtained. According to the constraint conditions of mechanism engineering design, taking the minimum deviation error of slide kinematics data and the minimum mechanism height as the optimization object, the optimization model of transmission mechanism design was established. It was performed by the composite optimization algorithms based on penalty function and complex algorithm. The validity and effectiveness of the proposed method were verified by a practical instance.
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